#define  _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int a = 0;
	int b = 0;;
	scanf("%d %d", &a, &b);
	 a = a ^ b;
	 b = a ^ b;//b=a^b=a^b^b=a^0=a
	 a = a ^ b;//a=a^b^b=a^b^a=b^0=b
	printf("a=%d b=%d",a,b);

	return 0;
}
